# filename: TempStr.py

TempStr = input('输入带有符号的温度值：')
if TempStr[-1] in ['F', 'f']:
    C = (eval(TempStr[0: -1]) - 32) / 1.8
    print('转换后的温度值为:{:.2f}C' .format(C))
elif TempStr[-1] in ['C', 'c']:
    F = 1.8 * eval(TempStr[0: -1]) + 32
    print('转换后的温度值为：{:.2f}F' .format(F))
else:
    print('输入格式错误')

    
